Means for filling molds.



No. 645,986. Patented Mar. 27, I900. P. WERNICKE.

MEANS FOR FILLING MULDS.

(Application filed. June 26, 1899.) (No Model.) 3 Sheets-Sheet I.

MAW w m'inpaa ew No. 645,986. Patented Mar. 27, I900. P. WERNICKE.

MEANS FOR FILLING HOLDS.

(Application filed June 26, 1899.

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MEANS FOR FILLING HOLDS.

(Application filed June 26, 1899.) (No Model.) 3 Sheets$heet 3.

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NITED. STATEs PATENT OFFICE.

PAUL WERNICKE, OF EILENBURG, GERMANY.

MEANS FOR FILLING lVlOLDS.

SPECIFICATION forming part of Letters Patent No. 645,986, dated March27, 1900. Application filed June 26, 1899. Serial No. 721,895. (Nomodel.)

To all whom, it 772/Cl/Z/ concern: Be it known that 1, PAUL WERNIoKE, asubject of the King of Prussia, Emperor of Germany, residing atEilenburg, Prussia, Germany, have invented a newand useful Improvementin Means for Filling Pressure- Molds, of which the following is a fulland exact specification.

The present invention consists of improved means for fillingpressure-molds and of the details of construction hereinafter setforth,and particularly pointed out in the claims.

In order to render the present specification more easily intelligible,reference is had to the accompanying drawings, in which similar lettersof reference denote 'similar parts throughout the several views.

Figure l is a diagram showing the method of filling the mold forabrickhaving hardened edges. Figs. 2 and 3 are vertical sections,

taken in planes at right angles to each other, of the box with fast andmovable sieves, the said sieves being raised. Figs. 4 and 5 are similarsections showing the sieves down. Fig. 6 is a plan of Fig. 2. Fig. 7 isa perspective view of a different form of brick or tile or the like, andFigs. 8 and 9 diagrams of the method of filling the mold to attain thesaid brick. Figs. 10 and 11 are vertical sections showing the formationof the sieves necessary for attaining the form of Ware shown at Figs. 8and 9. Fig. 12 is another form of brick or tile, Figs. 13 and letdiagrams showing'the filling of the mold for this form, and Figs. 15 and16 vertical sections through two forms of filling-boxes for attainingthe desired results.

Fig. 17 is an end elevation of a tile, Fig. 18

diagram of the filling for the same, and Fig. 19 is a vertical sectionof the filling-box as designed for the said tile. Figs. 20 and 21 arevertical section and plan, respectively, of a simplified form of theinvention; and Fig. 22 is a vertical section of this form of filling-boxin position on the top of the mold.

Referring to Figs. 1 to 9, the object of the present invention is todistribute the material in the mold in proportionate thickness to thevarious parts of the object to be pressed, and this is attained byforming a sieve-bottom to the filling-box A, said bottom consistmentbeing limited by a collar on the bar 0,

said collar having advantageously arms f extending therefrom to loosenthe material as the sieve is worked up and down. The bars of the sievesfit one between the other, as will .be seen from Fig. 3, so that whenthe movable sieve is down the bars will practically close the bottom ofthe box, as at Fig. 5. The bars are bent to theprofile of the object tobe pressed. Thus supposing, as at Fig. 1, it is required to provide anordinary brick with harder sides and edges, then the box of Figs. 2 to 4would be employed, thus distributing more material at the sides, asindicated in dotted lines in Fig. 1, so that when the die descends it,having an even face, will more compactly compress the material at thesides of the brick, as will be evident. The fillingbox is placed on thetop of the mold, as is indicated in connection with another form of theinvention in Fig. 22, and the movable sieve worked up and down until themold is sufficiently full. If it is required to form a 'brick or tile,as shown at Fig. 7, this may be done in two ways, as indicated at Figs.8 and 9'. The former figure indicates the method of filling when therecess is in the bottom of the brick-i. e. is formed by a projectingpart of the mold-4n which case, as will be evident, the material will becompressed in proportion to the thicknesses of the brick at the variouspoints. If the depression is formed by a projection of the die,thefilling-box of Fig. 11 would be employed in the manner indicated inFig. 9, the bends of the sieve-bars being in this case deeper, so as toproduce the same result as the projection of the mold, together with theshallow bends of the sieve in Fig. 10, would produce in the case of Fig.8.

In Figs. 12 to 16 double bends are employed to produce doubledepressions on the top or bottom of the brick, the method beinganalogous to that of Figs. 8 to 12.

Fig. 17 shows a tile of a class very generally employed just at present,and Fig. 19 shows the form of the sieve-bottom of the filling-box tosuit the production of such tile.

In Fig. 18 the dotted lines indicate the material before compression.

From all the foregoing figures it will be clearly seen that the materialis distributed in the mold at a thickness about double that of thevarious parts of the pressed ware after compression, so that articlesformed by the present filling device will be substantially uniform inquality throughout, or they may be made harder at any desired parts, asmay be required. When the filling operation has been completed, themovable sieve is lowered to come into alinement with the fixed sieve,thus practically forming a full bottom, so that the mold may be removedfrom underneath the filling-box and an empty mold substituted therefor.

In Figs. 20 to 22 asimplified form of the invention is employed, in thiscase a profile sieve being formed in the bottom of the box and themovable sieve being omitted. B indicates the profile sieve, and thefilling-box is placed over the mold O, as shown at Fig. 22, the materialbeing shoveled into the box and falling through the sieve into the mold.When the latter is full, the material may be brushed through the poresof the sieve by means of a brush or other means, or this may take placeduring the filling to prevent the pores becoming clogged up. If then theupper surface of the material is somewhat compressed or stamped, thematerial will set fast .in the pores of the sieve and the mold on beingremoved will be found to be filled with material having an upper surfacecorresponding to the profile of the sieve, as indicated in the drawings.

I claim as my invention- 1. A box for filling molds having at the bottoma profiled grate or sieve, to correspond to the various thicknesses ofthe ware to be subsequently pressed in the manner and for the purposesubstantially as described.

2. A box for filling molds having a fixed grate at the bottom and amovable grate to pass between the bars of the said fixed grate, saidgrates having a profile corresponding to the various thicknesses of theware to be subsequently pressed, in the manner and for the purposesubstantially as described.

3. A box for filling molds having a fixed profiled grate at the bottomand a verticallymovable grate to fit into said fixed grate when lowered,and means in connection with the said movable grate to move the same upand down in the manner and for the purpose substantially as described.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

PAUL WERNIOKE.

Witnesses:

MoRITz SPREER, RUDOLPH FRICKE.

